British Standard Whitworth. BSW. HSS M2 High quality General Purpose Taps, Ground Thread, available in sets of three and also individual taps. Right Hand Cutting, Straight Flute. 1 - 7mm tap wrench.
Tap set includes Taper, Second and Bottoming taps. You can specify individual taps from the product menus or by calling us directly and quoting (TS) BSW 1/4" x 20.
Pitch: 20